User`s guide

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KA52/53/54 Firmware Commands

3.1 Console I/O Mode Control Characters

When you press <

, the console deletes the previously typed character. The

resulting display differs, depending on whether the console is a video or a

hardcopy terminal.

For hardcopy terminals, the console echoes a backslash (\), followed by the

deletion of the character. If you press additional rubouts, the additional

deleted characters are echoed. If you type a nonrubout character, the console

echoes another backslash, followed by the character typed. The result is to

echo the characters deleted, surrounding them with backslashes. For example:

EXAMI;E

NE<CR>

The console echoes: EXAMI;E\E;\NE<CR>

The console sees the command line: EXAMINE<CR>

For video terminals, the previous character is erased and the cursor is restored

to its previous position.

The console does not delete characters past the beginning of a command line.

If you press more rubouts than there are characters on the line, the extra

rubouts are ignored. A rubout entered on a blank line is ignored.

CTRL/A

and

F14

Toggle insertion/overstrike mode for command line editing. By default, the

console powers up to overstrike mode.

CTRL/B

or up_

arrow (or down_

arrow)

Recalls previous command(s). Command recall is only operable if sufﬁcient

memory is available. This function may then be enabled and disabled using

the SET RECALL command.

CTRL/D

and left

arrow

Move cursor left one position.

CTRL/E

Moves cursor to the end of the line.

CTRL/F

and

right arrow

Move cursor right one position.

CTRL/H

backspace, and

F12

Move cursor to the beginning of the line.

CTRL/U

Echoes ^U<CR> and deletes the entire line. Entered but otherwise ignored if

typed on an empty line.

CTRL/S

Stops output to the console terminal until

CTRL/Q

is typed. Not echoed.

CTRL/Q

Resumes output to the console terminal. Not echoed.

CTRL/R

Echoes <CR><LF>, followed by the current command line. Can be used to

improve the readability of a command line that has been heavily edited.

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